what is the average period of rotation of HCImolecule if it is in the J-1 state. The inter nuclear distance ofHCI is 0.1274nm. Given the mass of H and chlorine atomsare 1.673x10-27Kg and 58.06x1027Kg respectivelyH.W(4):-1-A:-Calculate the energy and wave-length of the photonabsorbed when a Hg"Cl molecule (r. 2.23°A) makes therotational transition J-0-J-1 and J=1-J-2.B: In what region of the electromagnetic spectrum arethese lines found?2- Suppose that the equilibrium separation in the 'H"CImolecules is the same and equal to 1.27°A. Compute for eachmoleculeA:-The constant B.B: The energy of the first two excited rotationalevels.C:-The frequencies and wave length corresponding to thetransition J-0-J-1 and J-1-J=2.Q: What is the necessary condition for a molecule to show rotational spectrum?Q: What is the effect of decrease in the moment of inertia on the energy of the rotational level?

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